SSM traction bars (aka lift bars / control arms) use the axle torque to increase your tire traction by lowering the center of gravity on the rear axle. This forces torque downward instead of forward, planting your rear tires by pushing them down into the pavement. This greatly reduces wheel spin, and eliminates axle-hop. Delrin bushings in the bars greatly improve stability, reducing chassis flex, providing firm control of the newly found launch power. Easily bolted on installation requires no welding, making them great for all stock race classes. If you're not using our classic SSM Lift bars - you'll just be spinning your wheels!